US6988903B1 - Extractable conversion plug with a safety protection means - Google Patents

Extractable conversion plug with a safety protection means Download PDF

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Publication number
US6988903B1
US6988903B1 US11/094,143 US9414305A US6988903B1 US 6988903 B1 US6988903 B1 US 6988903B1 US 9414305 A US9414305 A US 9414305A US 6988903 B1 US6988903 B1 US 6988903B1
Authority
US
United States
Prior art keywords
slab
spring
connection head
base seat
conduction pieces
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US11/094,143
Inventor
Jen-Jen Cheng
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Edac Power Electronics Co Ltd
Original Assignee
Edac Power Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Edac Power Electronics Co Ltd filed Critical Edac Power Electronics Co Ltd
Priority to US11/094,143 priority Critical patent/US6988903B1/en
Assigned to EDAC POWER ELECTRONICS CO., LTD. reassignment EDAC POWER ELECTRONICS CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHENG, JEN-JEN
Application granted granted Critical
Publication of US6988903B1 publication Critical patent/US6988903B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R31/00—Coupling parts supported only by co-operation with counterpart
    • H01R31/06—Intermediate parts for linking two coupling parts, e.g. adapter
    • H01R31/065—Intermediate parts for linking two coupling parts, e.g. adapter with built-in electric apparatus
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/44—Means for preventing access to live contacts
    • H01R13/447—Shutter or cover plate
    • H01R13/453—Shutter or cover plate opened by engagement of counterpart
    • H01R13/4534—Laterally sliding shutter
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S439/00—Electrical connectors
    • Y10S439/929—Connecting base plate or shelf type holder

Definitions

  • the present invention relates to an extractable conversion plug with a safety protection means, and more particularly to an extractable conversion plug wherein a spring is installed between a moveable pillar of a slab and a latching element, inside a connection head, such that the slab can cover conduction pieces through an elastic force from an expansion of the spring, thereby preventing the conduction pieces from being exposed.
  • connection head Upon emplacing the connection head at a base seat, gliding edges of the connection head are put into gliding slots.
  • the conduction pieces When the slab is stopped from keeping on moving by a stopper, the conduction pieces are exposed due to a persistent moving of the connection head, and are contacted with spring leaves of the base seat, thereby constituting a close-circuit status.
  • the spring In the mean time, the spring is under compression due to an offset of one end of the moveable pillar and latching element.
  • a conventional extractable conversion plug A consists of a connection head A 1 and a base seat A 2 .
  • a raised edge A 11 of the connection head A 1 is put into a gliding slot A 21 of the base plate A 2 , so as to enable conduction pieces A 12 to be in contact with spring leaves A 22 , and a raised element A 23 is latched into a groove A 13 .
  • a base seat A 2 is easy to be loosened from a connection head A 1 if a latching structure between the connection head A 1 and the base seat A 2 is loosened from being kicked out by a user accidentally or after a long time of usage, at which conduction pieces A 12 are exposed outside and thus easy to cause the user to touch carelessly, and get an electric shock.
  • a plug is constituted by a connection head, a spring, a slab, a latching element, and a base seat, wherein a latching groove, gliding slots, gliding edges, a holding groove, and a screw hole are installed on the connection head, moveable edges and a moveable pillar are installed on the slab, and a gliding slot, a stopper, and spring leaves are installed on the base seat.
  • the moveable edges and the moveable pillar of the slab are inserted into the gliding slots and the holding groove of the connection head, respectively.
  • the spring is then inserted into the holding groove of the connection head.
  • the latching element is put into the latching groove and fixed by passing a screw through screw holes.
  • the spring is located between the moveable pillar and the latching element of the slab, and the slab can be covered on conduction pieces through an elastic force from an expansion of the spring, so as to prevent the conduction pieces from being exposed.
  • the gliding edges of the connection head are emplaced into the gliding slot.
  • the conduction pieces will be exposed due to a persistent moving of the connection head and will be contacted with the spring leaves of the base seat, thereby constituting a close-circuit condition.
  • the spring is under compression due to an offset of one end of the moveable pillar and the latching element.
  • FIG. 1 shows a perspective view of a conventional extractable conversion plug.
  • FIG. 2 shows a rear view of a conventional connection head.
  • FIG. 3 shows a perspective view of a fall-off condition of a conventional extractable conversion plug.
  • FIG. 4 shows a perspective view of the present invention.
  • FIG. 5 shows an assembly view of the present invention.
  • FIG. 6 shows a schematic view of another side of a slab of the present invention.
  • FIG. 7 shows a cutaway view of the present invention.
  • FIG. 8 shows a cutaway view of an action of the present invention.
  • FIG. 9 shows a second cutaway view of an action of the present invention.
  • FIG. 10 shows third cutaway view of an action of the present invention.
  • FIG. 11 shows a fourth cutaway view of an action of the present invention.
  • FIG. 11A shows a blowup view of part a of FIG. 11 .
  • FIG. 12 shows a schematic view of a further implementation of the present invention.
  • FIG. 8 it shows an implementation of the present invention.
  • a spring C 2 is located between a moveable pillar C 32 and a latching element C 4 of a slab C 3 , so as to cover the slab C 3 on conduction pieces C 5 through an elastic force of the spring C 2 , thereby preventing the conduction pieces C 5 from being exposed.
  • connection head C 1 upon emplacing the connection head C 1 at the base seat D, gliding edges C 13 is moving inside a gliding slot D 1 , and the slab C 3 is gradually approaching to a stopper D 2 of the base seat D.
  • the stopper D 2 will stop the slab C 3 from moving further.
  • the moveable pillar C 32 will be immoveable due to a stop of the slab C 3 , but the spring C 2 will start to be compressed due to a persistent moving of the latching element C 4 at the other end of spring C 2 .
  • connection head C 1 keeps on moving until completely inserting the gliding edges C 13 into the gliding slot D 1 , the conduction pieces C 5 will be exposed and contacted with spring leaves D 3 to constitute a close-circuit condition due to a persistent stop of the slab C 3 .
  • a plug C can be connected to a socket for conducting electricity, and the spring C 2 is compressed to its maximum extent.
  • the slab C 3 can be in a mobilized state due to that the stopper D 2 of the base seat D is not stopping the slab C 3 .
  • the spring C 2 is turned into an expansion state from the aforementioned compression state, which completely relieves its elastic force, so as to put the moveable pillar C 32 of the slab C 3 against a top end of holding groove C 14 of the connection head C 1 , and to move the slab C 3 to cover on the conduction pieces C 5 which are exposed previously, thereby preventing a user from getting an electric shock by a careless touch.
  • connection head C 1 when a user wants to remove the connection head C 1 from the socket B, he would not be concerned about touching the conduction pieces C 5 to get an electric shock during removing, as the connection head C 1 is made of insulation material. Furthermore, if the base seat D falls off by accident, the user can directly mount the base seat D on the connection head C 1 inserted on the plug C, before taking out the plug C.
  • a connection head of the present invention can be further mounted with conduction pieces E, E 1 , and E 2 of various sizes, quantities, and layouts, corresponding to specifications of power plugs in different countries.
  • the connection head C 1 when the connection head C 1 is not connected to the base seat D, the slab C 3 can completely cover the conduction pieces E, E 1 , and E 2 .

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Abstract

An extractable conversion plug with a safety protection means includes a spring is located between a moveable pillar of a slab and a latching element, inside a connection head, such that the slab can cover conduction pieces through an elastic force from an expansion of the spring, thereby preventing the conduction pieces from being exposed. Upon emplacing the connection head at a base seat, the slab is stopped from moving by a stopper, and the conduction pieces are exposed and are contacted with spring leaves of the base seat, thereby constituting a close-circuit status. When the base seat falls off by accident, a stopping force of the slab is relieved to release a compression force from the spring, which will cause the spring to expand, so as to move the slab to cover the conduction pieces, thereby preventing from getting an electric shock by a careless touch.

Description

BACKGROUND OF THE INVENTION
(a) Field of the Invention
The present invention relates to an extractable conversion plug with a safety protection means, and more particularly to an extractable conversion plug wherein a spring is installed between a moveable pillar of a slab and a latching element, inside a connection head, such that the slab can cover conduction pieces through an elastic force from an expansion of the spring, thereby preventing the conduction pieces from being exposed.
Upon emplacing the connection head at a base seat, gliding edges of the connection head are put into gliding slots. When the slab is stopped from keeping on moving by a stopper, the conduction pieces are exposed due to a persistent moving of the connection head, and are contacted with spring leaves of the base seat, thereby constituting a close-circuit status. In the mean time, the spring is under compression due to an offset of one end of the moveable pillar and latching element.
When the base seat falls off by accident, a stopping force of the slab is relieved to release a compression force from the spring, which will cause the spring to expand, so as to move the slab to cover the conduction pieces, thereby preventing a user from getting an electric shock by a careless touch.
(b) Description of the Prior Art
Referring to FIG. 1 and FIG. 2, a conventional extractable conversion plug A consists of a connection head A1 and a base seat A2. Upon using the plug, a raised edge A11 of the connection head A1 is put into a gliding slot A21 of the base plate A2, so as to enable conduction pieces A12 to be in contact with spring leaves A22, and a raised element A23 is latched into a groove A13.
Referring to FIG. 3, when a conventional extractable conversion plug A is fixed on an outlet B, a base seat A2 is easy to be loosened from a connection head A1 if a latching structure between the connection head A1 and the base seat A2 is loosened from being kicked out by a user accidentally or after a long time of usage, at which conduction pieces A12 are exposed outside and thus easy to cause the user to touch carelessly, and get an electric shock.
Accordingly, how to provide an extractable conversion plug with a safety protection means is a problem which needs to be solved by the inventor.
SUMMARY OF THE INVENTION
The primary object of the present invention is to provide an extractable conversion plug with a safety protection means. Referring to FIG. 4 and FIG. 5, a plug is constituted by a connection head, a spring, a slab, a latching element, and a base seat, wherein a latching groove, gliding slots, gliding edges, a holding groove, and a screw hole are installed on the connection head, moveable edges and a moveable pillar are installed on the slab, and a gliding slot, a stopper, and spring leaves are installed on the base seat. The moveable edges and the moveable pillar of the slab are inserted into the gliding slots and the holding groove of the connection head, respectively. The spring is then inserted into the holding groove of the connection head. After that, the latching element is put into the latching groove and fixed by passing a screw through screw holes.
Referring to FIG. 7, the spring is located between the moveable pillar and the latching element of the slab, and the slab can be covered on conduction pieces through an elastic force from an expansion of the spring, so as to prevent the conduction pieces from being exposed. Upon emplacing the connection head at the base seat, the gliding edges of the connection head are emplaced into the gliding slot. On the other hand, when the slab is stopped by the stopper and cannot keep on moving, the conduction pieces will be exposed due to a persistent moving of the connection head and will be contacted with the spring leaves of the base seat, thereby constituting a close-circuit condition. In the mean time, the spring is under compression due to an offset of one end of the moveable pillar and the latching element. Therefore, when the base seat falls off by accident, a stopping force of the slab will be relieved to release a compression force of the spring, which will cause the spring to expand, so as to move the slab to cover the conduction pieces, thereby preventing a user from getting an electric shock by a careless touch.
To enable a further understanding of the said objectives and the technological methods of the invention herein, the brief description of the drawings below is followed by the detailed description of the preferred embodiments.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 shows a perspective view of a conventional extractable conversion plug.
FIG. 2 shows a rear view of a conventional connection head.
FIG. 3 shows a perspective view of a fall-off condition of a conventional extractable conversion plug.
FIG. 4 shows a perspective view of the present invention.
FIG. 5 shows an assembly view of the present invention.
FIG. 6 shows a schematic view of another side of a slab of the present invention.
FIG. 7 shows a cutaway view of the present invention.
FIG. 8 shows a cutaway view of an action of the present invention.
FIG. 9 shows a second cutaway view of an action of the present invention.
FIG. 10 shows third cutaway view of an action of the present invention.
FIG. 11 shows a fourth cutaway view of an action of the present invention.
FIG. 11A shows a blowup view of part a of FIG. 11.
FIG. 12 shows a schematic view of a further implementation of the present invention.
 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring to FIG. 8, it shows an implementation of the present invention. Before emplacing a connection head C1 at a base seat D, a spring C2 is located between a moveable pillar C32 and a latching element C4 of a slab C3, so as to cover the slab C3 on conduction pieces C5 through an elastic force of the spring C2, thereby preventing the conduction pieces C5 from being exposed.
Referring to FIG. 9 and FIG. 10, upon emplacing the connection head C1 at the base seat D, gliding edges C13 is moving inside a gliding slot D1, and the slab C3 is gradually approaching to a stopper D2 of the base seat D. When the connection head C1 keeps on moving, the stopper D2 will stop the slab C3 from moving further. At this time, the moveable pillar C32 will be immoveable due to a stop of the slab C3, but the spring C2 will start to be compressed due to a persistent moving of the latching element C4 at the other end of spring C2.
When the connection head C1 keeps on moving until completely inserting the gliding edges C13 into the gliding slot D1, the conduction pieces C5 will be exposed and contacted with spring leaves D3 to constitute a close-circuit condition due to a persistent stop of the slab C3. At this time, a plug C can be connected to a socket for conducting electricity, and the spring C2 is compressed to its maximum extent.
Referring to FIG. 11 and FIG. 11A, when the base seat D falls off by accident, the slab C3 can be in a mobilized state due to that the stopper D2 of the base seat D is not stopping the slab C3. Moreover, as the spring C2 is turned into an expansion state from the aforementioned compression state, which completely relieves its elastic force, so as to put the moveable pillar C32 of the slab C3 against a top end of holding groove C14 of the connection head C1, and to move the slab C3 to cover on the conduction pieces C5 which are exposed previously, thereby preventing a user from getting an electric shock by a careless touch.
In addition, when a user wants to remove the connection head C1 from the socket B, he would not be worried about touching the conduction pieces C5 to get an electric shock during removing, as the connection head C1 is made of insulation material. Furthermore, if the base seat D falls off by accident, the user can directly mount the base seat D on the connection head C1 inserted on the plug C, before taking out the plug C.
Referring to FIG. 12, a connection head of the present invention can be further mounted with conduction pieces E, E1, and E2 of various sizes, quantities, and layouts, corresponding to specifications of power plugs in different countries. On the other hand, when the connection head C1 is not connected to the base seat D, the slab C3 can completely cover the conduction pieces E, E1, and E2.
To further manifest the advancement and practicability of the present invention, the present invention is compared with a conventional application as follow:
Shortcomings of a Conventional Application
    • There is no safety shielding for conduction pieces on a connection head.
    • If a base seat is loosened from the connection head by accident, the conduction pieces will be completely exposed, which will be easy to cause a user to get an electric shock.
Advantages of the Present Invention
    • Conduction pieces can be completely covered by a slab while not in use.
    • If a slab is loosened from a base seat by accident, the conduction pieces will be covered by the slab.
    • Accordingly, if the base seat falls off by accident upon connecting to a socket, the conduction pieces will be completely covered by the slab.
    • It can prevent a user from getting an electric shock.
    • It is provided with an advancement, practicability, and safety.
    • It can promote an industrial competitiveness.
It is of course to be understood that the embodiments described herein is merely illustrative of the principles of the invention and that a wide variety of modifications thereto may be effected by persons skilled in the art without departing from the spirit and scope of the invention as set forth in the following claims.

Claims (3)

1. An extractable conversion plug with a safety protection means comprising a connection head, a spring, a slab, a latching element, and a base seat, wherein the connection head is provided with a latching groove, gliding slots, gliding edges, a holding groove, and screw holes, the slab is provided with moveable edges and a moveable pillar, and the base seat is provided with a gliding slot, a stopper, and spring leaves; the moveable edges and moveable pillar of the slab being inserted into the gliding slots and holding groove of the slab respectively, next the spring being inserted into the holding groove of the connection head, then the latching element being inserted into the latching groove and fixed by a screw; the spring being located between the moveable pillar and the latching element of the slab, enabling the slab to completely cover conduction pieces through an elastic force from an expansion of the spring.
2. The extractable conversion plug with a safety protection means according to claim 1, wherein a stopper of the base seat is used to stop the slab from keeping on moving, such that the conduction pieces are exposed and contacted with spring leaves of the base seat for constituting a close-circuit condition.
3. The extractable conversion plug with a safety protection means according to claim 1, wherein the conduction pieces of the connection head can further be in various shapes, quantities, and layouts, corresponding to specifications of electricity in different countries.
US11/094,143 2005-03-31 2005-03-31 Extractable conversion plug with a safety protection means Expired - Fee Related US6988903B1 (en)

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7168969B1 (en) * 2006-02-07 2007-01-30 Leader Electronics Inc. Adjustable right angle electrical plug with an interchangeable plug assembly
GB2444983A (en) * 2006-12-21 2008-06-25 Strax Uk Ltd Plug with removable earth pin unit
US20080276103A1 (en) * 2007-05-04 2008-11-06 Edac Power Electronics Co., Ltd. Universal serial bus assembly structure
US7654838B1 (en) * 2008-12-08 2010-02-02 Rui Zhuge Universal-conversion power cable
US20100210125A1 (en) * 2009-02-17 2010-08-19 Shenzhen Futaihong Precision Industry Co., Ltd. Cover mechanism and electronic device using same
US20110117766A1 (en) * 2009-10-07 2011-05-19 Kuan-Chih Chen Power adapter having a replaceable and rotatable plug
US20110289328A1 (en) * 2007-05-04 2011-11-24 Jen-Jen Cheng Universal serial bus assembly structure
US20120021653A1 (en) * 2010-07-23 2012-01-26 Delta Electronics, Inc. Power adapter with interchangeable connectors and power supply having the same
US9054472B2 (en) * 2013-04-02 2015-06-09 Hon Hai Precision Industry Co., Ltd. Power adapter with plug member stowable in housing
US9722377B1 (en) * 2016-08-04 2017-08-01 Edac Power Electronics Co., Ltd. Pluggable power supply device
US20170244206A1 (en) * 2014-08-25 2017-08-24 Friwo Gerätebau Gmbh Plug-in power supply with interchangeable mains plug units
US20210218187A1 (en) * 2018-04-14 2021-07-15 Asterisk, Inc. Connector and connection adapter
US11614110B2 (en) * 2018-12-06 2023-03-28 Getac Technology Corporation Demountable assembly structure

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US5634806A (en) * 1994-02-24 1997-06-03 Asian Micro Sources, Inc. Interchangeable collapsible plug device for battery charger
US5702259A (en) * 1996-08-12 1997-12-30 Lee; Chiu-Shan Safety socket and plug arrangement
US5848907A (en) * 1996-05-24 1998-12-15 Board-Tech Electronic Co., Ltd. Adapter with interchangeable plug board
US6123557A (en) * 1998-12-02 2000-09-26 Inventec Corporation Automatic opening mechanism for docking station connector cover
JP2004031260A (en) * 2002-06-28 2004-01-29 Smk Corp Connector with slider
US6893275B2 (en) * 2003-01-29 2005-05-17 Koncept Technologies Inc. Electrical receptacle with shutter
US6923666B1 (en) * 2004-01-09 2005-08-02 Sheng Hsin Liao Electrical plug changer

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5634806A (en) * 1994-02-24 1997-06-03 Asian Micro Sources, Inc. Interchangeable collapsible plug device for battery charger
US5848907A (en) * 1996-05-24 1998-12-15 Board-Tech Electronic Co., Ltd. Adapter with interchangeable plug board
US5702259A (en) * 1996-08-12 1997-12-30 Lee; Chiu-Shan Safety socket and plug arrangement
US6123557A (en) * 1998-12-02 2000-09-26 Inventec Corporation Automatic opening mechanism for docking station connector cover
JP2004031260A (en) * 2002-06-28 2004-01-29 Smk Corp Connector with slider
US6893275B2 (en) * 2003-01-29 2005-05-17 Koncept Technologies Inc. Electrical receptacle with shutter
US6923666B1 (en) * 2004-01-09 2005-08-02 Sheng Hsin Liao Electrical plug changer

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7168969B1 (en) * 2006-02-07 2007-01-30 Leader Electronics Inc. Adjustable right angle electrical plug with an interchangeable plug assembly
GB2444983A (en) * 2006-12-21 2008-06-25 Strax Uk Ltd Plug with removable earth pin unit
GB2444983B (en) * 2006-12-21 2009-09-30 Strax Uk Ltd Electrical plug
US20080276103A1 (en) * 2007-05-04 2008-11-06 Edac Power Electronics Co., Ltd. Universal serial bus assembly structure
US20110289328A1 (en) * 2007-05-04 2011-11-24 Jen-Jen Cheng Universal serial bus assembly structure
US7654838B1 (en) * 2008-12-08 2010-02-02 Rui Zhuge Universal-conversion power cable
US20100210125A1 (en) * 2009-02-17 2010-08-19 Shenzhen Futaihong Precision Industry Co., Ltd. Cover mechanism and electronic device using same
US7837484B2 (en) * 2009-02-17 2010-11-23 Shenzhen Futaihong Precision Industry Co., Ltd. Cover mechanism and electronic device using same
US7946868B1 (en) 2009-10-07 2011-05-24 Leader Electronics Inc. Power adapter having a replaceable and rotatable plug
US20110117766A1 (en) * 2009-10-07 2011-05-19 Kuan-Chih Chen Power adapter having a replaceable and rotatable plug
US20120021653A1 (en) * 2010-07-23 2012-01-26 Delta Electronics, Inc. Power adapter with interchangeable connectors and power supply having the same
US8382526B2 (en) * 2010-07-23 2013-02-26 Delta Electronics, Inc. Power adapter with interchangeable connectors and power supply having the same
US9054472B2 (en) * 2013-04-02 2015-06-09 Hon Hai Precision Industry Co., Ltd. Power adapter with plug member stowable in housing
US20170244206A1 (en) * 2014-08-25 2017-08-24 Friwo Gerätebau Gmbh Plug-in power supply with interchangeable mains plug units
US9985397B2 (en) * 2014-08-25 2018-05-29 Friwo Gerätebau Gmbh Plug-in power supply with interchangeable mains plug units
US10270214B2 (en) 2014-08-25 2019-04-23 Friwo Gerätebau Gmbh Plug-in power supply with interchangeable mains plug units
US9722377B1 (en) * 2016-08-04 2017-08-01 Edac Power Electronics Co., Ltd. Pluggable power supply device
US20210218187A1 (en) * 2018-04-14 2021-07-15 Asterisk, Inc. Connector and connection adapter
US11614110B2 (en) * 2018-12-06 2023-03-28 Getac Technology Corporation Demountable assembly structure

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